.flex-container {
    display: -webkit-flex;
    display: flex;
    -webkit-justify-content: space-between;
    justify-content: space-between;
}
.window {
    width: 20%;
    padding-bottom: 20px;
    background-color: #fff;
    position: fixed;
    display: none;
    margin-bottom: 100px;
    border: 1px solid #E0DFDF;
}
.add_btn {
    height: 1400px;
    cursor: pointer;
}
.btn_text {
    width: 80px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    color: #fff;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -40px;
    margin-left: -20px;
    background-color: #FDDB54;
}
.border_add_nav {
    width: 100%;
    border-bottom: 1px solid #E0DFDF;
}
.border_add_nav_box {
    width: 90%;
    margin: 0 auto;
    font-size: 16px;
}
.border_add_main_content {
    width: 100%;
    margin-left: 5%;
    margin-bottom: 3%;
    overflow: hidden;
    overflow-y: auto;
}
.border_add_btn_box {
    width: 90%;
    height: 100%;
    margin: 0 auto;
    overflow: hidden;
}
.add_title {
    color: #20AAE4;
}
.name,
.input {
    margin-top: 30px;
    float: left;
}
.input {
    width: 160px;
    height: 40px;
    text-align: center;
    outline: none;
    appearance: none;
    -moz-appearance: none;
    border-radius: 4px;
    border: 1px solid #c8cccf;
    color: #000;
}
.cancel,
.save {
    width: 80px;
    height: 40px;
    line-height: 40px;
    float: left;
    color: #fff;
    text-align: center;
    border-radius: 5%;
    cursor: pointer;
}
.cancel {
    margin-right: 10px;
    background: #E0DFDF;
}
.save {
    background: #20AAE4;
}
.mask {
    position: absolute;
    top: 0;
    display: none;
    background-color: rgba(0, 0, 0, 0.5);
}